Dynamic conditions present in a channel can quickly degrade signal quality, thereby reducing the data rate usable by a WLAN transmitter. Preferably the combination includes at least: an ankle and foot covering; a detachable sole detachably attached to the ankle and foot covering; and a detachable sole storage rack attached to the ankle and foot covering for use in storing the detachable sole when detached from the ankle and foot covering. The TLB flush promotion threshold value is determined dynamically by the computing device by determining an amount of time it takes to flush and repopulate all entries of the TLB. A signal delay bank includes a plurality of delay blocks each for delaying the digital signal filtered by the single matched filter for a predetermined number of samples.